package org.yray.config;

import com.alibaba.otter.canal.client.CanalConnector;
import com.alibaba.otter.canal.client.CanalConnectors;
import com.alibaba.otter.canal.protocol.CanalEntry;
import com.alibaba.otter.canal.protocol.Message;
import lombok.extern.slf4j.Slf4j;
import org.apache.commons.lang.exception.ExceptionUtils;
import org.springframework.beans.factory.InitializingBean;
import org.springframework.beans.factory.annotation.Value;
import org.springframework.boot.autoconfigure.condition.ConditionalOnProperty;
import org.springframework.stereotype.Component;

import java.net.InetSocketAddress;
import java.util.List;

/**
 * <p>Description: </p>
 * <p>Copyright: Copyright (c) 2020-2050</p>
 * <p>Company: cfss</p>
 *
 * @author lyg
 * @version 0.0.1
 * @date 2020/12/30 15:59
 * @other 以下修改下及其它信息
 * <p>v0.0.2,lyg,这是示例</p>
 */
@Component
@Slf4j
@ConditionalOnProperty(name = "fgbp.node.ext.enableMode" ,havingValue = "mysql")
public class MysqlListenerConf implements InitializingBean {

    private final static int BATCH_SIZE = 1000;

    @Value("${canal.host:172.168.200.84}")
    private String canalHost;

    @Value("${canal.port:1111}")
    private Integer canalPort;

    @Value("${canal.dest:myfsc}")
    private String canalDest;

    @Value("${canal.username:root}")
    private String canalUsername;

    @Value("${canal.password:myfsc123}")
    private String canalPassword;

    @Override
    public void afterPropertiesSet() throws Exception {
        init();
    }
    public void init() {
        // 创建链接
        CanalConnector connector = CanalConnectors.newSingleConnector(new InetSocketAddress(canalHost, canalPort), canalDest, canalUsername, canalPassword);
        try {
            //打开连接
            connector.connect();
            //订阅数据库表,全部表
            connector.subscribe(".*\\..*");
            //connector.subscribe("sip_registrations");
            //回滚到未进行ack的地方，下次fetch的时候，可以从最后一个没有ack的地方开始拿
            connector.rollback();
            while (true) {
                // 获取指定数量的数据
                Message message = connector.getWithoutAck(BATCH_SIZE);
                //获取批量ID
                long batchId = message.getId();
                //获取批量的数量
                int size = message.getEntries().size();
                log.info("size=[{}]",size);
                //如果有数据,处理数据
                printEntry(message.getEntries());

                //进行 batch id 的确认。确认之后，小于等于此 batchId 的 Message 都会被确认。
                connector.ack(batchId);

            }
        } catch (Exception e) {
            log.error("Exception:{}", ExceptionUtils.getFullStackTrace(e));
        } finally {
            connector.disconnect();
        }
    }
    /**
     * 打印canal server解析binlog获得的实体类信息
     */
    private static void printEntry(List<CanalEntry.Entry> entrys) {
        for (CanalEntry.Entry entry : entrys) {
            if (entry.getEntryType() == CanalEntry.EntryType.TRANSACTIONBEGIN || entry.getEntryType() == CanalEntry.EntryType.TRANSACTIONEND) {
                //开启/关闭事务的实体类型，跳过
                continue;
            }
            //RowChange对象，包含了一行数据变化的所有特征
            //比如isDdl 是否是ddl变更操作 sql 具体的ddl sql beforeColumns afterColumns 变更前后的数据字段等等
            CanalEntry.RowChange rowChage;
            try {
                rowChage = CanalEntry.RowChange.parseFrom(entry.getStoreValue());
            } catch (Exception e) {
                throw new RuntimeException("ERROR ## parser of eromanga-event has an error , data:" + entry.toString(), e);
            }
            //获取操作类型：insert/update/delete类型
            CanalEntry.EventType eventType = rowChage.getEventType();
            //打印Header信息
            log.info(String.format("================》; binlog[%s:%s] , name[%s,%s] , eventType : %s",
                    entry.getHeader().getLogfileName(), entry.getHeader().getLogfileOffset(),
                    entry.getHeader().getSchemaName(), entry.getHeader().getTableName(),
                    eventType));
            //判断是否是DDL语句
            if (rowChage.getIsDdl()) {
                log.info("================》;isDdl: true,sql:" + rowChage.getSql());
            }
            //获取RowChange对象里的每一行数据，打印出来
            for (CanalEntry.RowData rowData : rowChage.getRowDatasList()) {
                //如果是删除语句
                if (eventType == CanalEntry.EventType.DELETE) {
                    printColumn(rowData.getBeforeColumnsList());
                    //如果是新增语句
                } else if (eventType == CanalEntry.EventType.INSERT) {
                    printColumn(rowData.getAfterColumnsList());
                    //如果是更新的语句
                } else {
                    //变更前的数据
                    log.info("------->; before");
                    printColumn(rowData.getBeforeColumnsList());
                    //变更后的数据
                    log.info("------->; after");
                    printColumn(rowData.getAfterColumnsList());
                }
            }
        }
    }

    private static void printColumn(List<CanalEntry.Column> columns) {
        for (CanalEntry.Column column : columns) {
            log.info(column.getName() + " : " + column.getValue() + "    update=" + column.getUpdated());
        }
    }

    public String getCanalHost() {
        return canalHost;
    }

    public void setCanalHost(String canalHost) {
        this.canalHost = canalHost;
    }

    public Integer getCanalPort() {
        return canalPort;
    }

    public void setCanalPort(Integer canalPort) {
        this.canalPort = canalPort;
    }

    public String getCanalDest() {
        return canalDest;
    }

    public void setCanalDest(String canalDest) {
        this.canalDest = canalDest;
    }

    public String getCanalUsername() {
        return canalUsername;
    }

    public void setCanalUsername(String canalUsername) {
        this.canalUsername = canalUsername;
    }

    public String getCanalPassword() {
        return canalPassword;
    }

    public void setCanalPassword(String canalPassword) {
        this.canalPassword = canalPassword;
    }


}